How does buffering a solution change the solutions behavior?
It will change its behaviour by becoming more resistant to the change on the pH.
If you turn a solution into a buffer solution, it will change its behaviour by becoming more resistant to the change on the pH of the solution, therefore, it will mainly change the way it reacts with acids or bases.
Here is a video that fully explain Buffer solution. I hope you find it useful.
Acid - Base Equilibria | Buffer Solution.